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| 1. |  | SOUZA, R. F.; TIBEIRO, K. M.; DEUS, R. J. A.; BANNA, D. A. D. S.; SOUZA FILHO, A. P. S.; ARRUDA, M. S. P.; SILVA, M. N.; ARRUDA, A.; SANTOS, A. S. Potencial bioerbicida de substâncias isoladas de Mansoa standleyi (Bignoniaceae). In: CONFERÊNCIA DO SUBPROGRAMA DE CIÊNCIA E TECNOLOGIA - SPC&T FASE II/PPG7, 2008, Belém, PA. Anais... Brasília, DF: CNPq, 2009. p. 379-382. Disponível também em CD-ROM (CD 00173).| Biblioteca(s): Embrapa Amazônia Oriental. |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
31/05/2016 |
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Data da última atualização: |
19/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
NÖLSCHER, A. C.; YAÑEZ-SERRANO, A. M.; WOLFF, S.; ARAUJO, A. C. de; LAVRIC, J. V.; KESSELMEIER, J.; WILLIAMS, J. |
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Afiliação: |
A. C. Nölscher, Max Planck Institute for Chemistry; A. M. Yañez-Serrano, Max Planck Institute for Chemistry / INPA; S. Wolff, Max Planck Institute for Chemistry / INPA; ALESSANDRO CARIOCA DE ARAUJO, CPATU; J. V. Lavric, Max Planck Institute for Biogeochemistry; J. Kesselmeier, Max Planck Institute for Chemistry; J. Williams, Max Planck Institute for Chemistry. |
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Título: |
Unexpected seasonality in quantity and composition of Amazon rainforest air reactivity. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Nature Communications, v. 7, art. n. 10383, 22 Jan. 2016. |
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DOI: |
10.1038/ncomms10383 |
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Idioma: |
Inglês |
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Conteúdo: |
The hydroxyl radical (OH) removes most atmospheric pollutants from air. The loss frequency of OH radicals due to the combined effect of all gas-phase OH reactive species is a measureable quantity termed total OH reactivity. Here we present total OH reactivity observations in pristine Amazon rainforest air, as a function of season, time-of-day and height (0?80 m). Total OH reactivity is low during wet (10 s1) and high during dry season (62 s1). Comparison to individually measured trace gases reveals strong variation in unaccounted for OH reactivity, from 5 to 15% missing in wet-season afternoons to mostly unknown (average 79%) during dry season. During dry-season afternoons isoprene, considered the dominant reagent with OH in rainforests, only accounts for B20% of the total OH reactivity. Vertical profiles of OH reactivity are shaped by biogenic emissions, photochemistry and turbulent mixing. The rainforest floor was identified as a significant but poorly characterized source of OH reactivity. |
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Palavras-Chave: |
Sazonalidade. |
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Thesagro: |
Floresta. |
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Thesaurus NAL: |
Amazonia. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/143562/1/ncomms10383.pdf
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Marc: |
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024 7 $a10.1038/ncomms10383$2DOI
100 1 $aNÖLSCHER, A. C.
245 $aUnexpected seasonality in quantity and composition of Amazon rainforest air reactivity.$h[electronic resource]
260 $c2016
520 $aThe hydroxyl radical (OH) removes most atmospheric pollutants from air. The loss frequency of OH radicals due to the combined effect of all gas-phase OH reactive species is a measureable quantity termed total OH reactivity. Here we present total OH reactivity observations in pristine Amazon rainforest air, as a function of season, time-of-day and height (0?80 m). Total OH reactivity is low during wet (10 s1) and high during dry season (62 s1). Comparison to individually measured trace gases reveals strong variation in unaccounted for OH reactivity, from 5 to 15% missing in wet-season afternoons to mostly unknown (average 79%) during dry season. During dry-season afternoons isoprene, considered the dominant reagent with OH in rainforests, only accounts for B20% of the total OH reactivity. Vertical profiles of OH reactivity are shaped by biogenic emissions, photochemistry and turbulent mixing. The rainforest floor was identified as a significant but poorly characterized source of OH reactivity.
650 $aAmazonia
650 $aFloresta
653 $aSazonalidade
700 1 $aYAÑEZ-SERRANO, A. M.
700 1 $aWOLFF, S.
700 1 $aARAUJO, A. C. de
700 1 $aLAVRIC, J. V.
700 1 $aKESSELMEIER, J.
700 1 $aWILLIAMS, J.
773 $tNature Communications$gv. 7, art. n. 10383, 22 Jan. 2016.
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Embrapa Amazônia Oriental (CPATU) |
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